Sash-fastener



" No. 6l2, 869.

Paten ted on. 25, I898. C. S. ROBERTS.

SA-SH FASTENER.

(Application filed Aug. 25, 1897.) I 560.

(No Model.)

INVEN TOR A TTOHNEVS.

. NTT D STATES PATENT OFFICE.

CHARLES s. ROBERTS, OF HAVEN, CONNECTICUT.

SASH-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 612,869, dated October25, 1898.

Application filed August 25, 1897.

To all whom it may concern.-

Be it known that I, CHARLES S. ROBERTs, a citizen of the United States,residing at New Haven, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements inSash-Fasteners, of which the following is a full and completespecification, such as will enable those skilled in the art to which itappertains to make and to use the same.

This invention relates to sash-fasteners, and particularly to that classof fasteners adapted for use in railway-cars or similar vehicles.

The object of my invention is to provide a fastener of theabove-described class which can be maintained at any desired position,which will not be susceptible to atmospheric changes, and which can bereadily operated at all times.

A further object of the invention is to provide a cheap, durable, andefficient sash-fastener which is simple in construction and arrangementand, as before stated, one which 2 5 will not readily get out of order.

The invention consists in the novel features of construction hereinafterset forth and described, and more particularly pointed out in the claimhereto appended.

Referring to the drawings, Figure 1 is a view of a window equipped withmy improved fastener, said window being broken away and showing myfastener in position, said fastener being partly in section. Fig. 2 is aside view 3 5 of said window-frame, and 3 is a section on the line 3 3of Fig. 1.

Like letters of reference designate like parts throughout the severalviews.

In the accompanying drawings, a denotes a window-frame of ordinaryconstruction, and

b a sash of the window. This sash, at one side thereof, is equipped witha rack, as d, which is adapted to engage with arack d which is mountedin the frame of the window. The

5 rack cl is provided at some point of its length with an ellipticalspring f, which is designed to operate against a plane dividing theteeth of the rack d The rack Cl is provided with V wedges g 9 which areadapted to cooperate with similar wedges h 71. on a sliding rod It.

m denotes a lever fulcrumed on the window- Serial No. 649,509. (Nomodel.)

frame, Fig. 2, and pivoted at its nether end to the sliding rod k.

The rack 61 may be provided with a cordslot, as on the ordinary window,and with out interfering with the operation of my improved fastener.

The Operation of myim proved fastener is as follows: The lever m beingraised so as to Jl L gage the wedges g and h andg and 71 respec- 6otively, the spring f operates to disengage the teeth of the racks dand'd and leave the window free tdb'e raised or lowered, as the case maybe.' The tension on this spring is preferablymade sufficiently great todisengage 65 these teeth, notwithstanding the swelling that may havebeen occasioned by rainy weather or a sudden change in the atmosphericcondition. WVhen the window has been raised or lowered to the desiredextent, it may be securely retained in this position by depressing thefree end of the lever m, thus op erating the wedges g and 72, and g and77/2 and engaging the teeth of the racks d and d only sufficient strainbeing necessary to depress the spring f.

By the above-described means I provide a window or sash fastener whichis cheap in construction, simple in arrangement, and which willproveequally efficient in all kinds 80 of weather.

The dangers attendant upon the breaking of the fastener of the ordinarycar-window are obviated, as it can be clearly seen that the breaking ofany one of the teeth of the rack d and 11 will be of no greatimportance, as the racks throughout their entire extent engage with eachother, retaining the window not by a single fastener but by a number.

It is not my intention to limit my inven- 0 tion to the preciseconstruction herein shown and described, as it is obvious that there maybe changes of many minor details without departing from the spirit of myinvention.

Having described my invention, what I claim as new, and desire to haveprotected by Letters Patent, is

In a sash-fastener, a sash having a rack along one side thereof, a1ongitudinally-im movable and laterally-movable rack mounted too in thewindow-frame and provided with a central groove or plane, wedges on saidrack, a

spring carried by the sash and traveling in In testimony that I claimthe foregoing as said groove or plane to hold said racks normy inventionIhave signed myname,in pres- 1o mally out of engagement, avertically-movence of the subscribing witnesses, this 24th able rod,wedges thereon engaging said firstday of August, 1897.

5 mentioned wedgeg'la'fid means for moving CHARLES S. ROBERTS.

said bar to force the racks int-o locking en- Witnesses: Y gagement orto release the same substantially O. GERST,

as described. M. A. KNOWLES.

